package Test;

import java.util.concurrent.ConcurrentHashMap;

public class test1 {
    public static void main(String[] args) {
        ConcurrentHashMap<Integer,Integer> hashMap = new ConcurrentHashMap<>();
        hashMap.put(1,1);
        System.out.println(2 << 3 * 8);
        System.out.println(2 * 8 << 3);
    }
}
